A Russian surveillance plane flew over Washington, D.C., and traveled near the Pentagon, the Capitol, and other government buildings Wednesday, CNN reported.

The flight on the Russian Air Force Tupolev Tu-154 was made as part of the Open Skies Treaty, a longstanding pact signed by 34 nations that allows participants to fly over any part of any territory of other participants to make sure everyone is adhering to treaties limiting the numbers and types of weapons.

U.S. Air Force personnel were on the plane, which flew at low altitude around 3,700 feet.

Sources told CNN the plane will also fly over Bedminster, N.J., where President Donald Trump is vacationing, the Trump National Golf Course in Virginia, the presidential retreat Camp David and Mount Weather, one of the U.S. government's secret relocation bunkers.

U.S. Capitol Police sent an alert about the flight Wednesday.

"The aircraft will be large and may fly directly over the U.S. Capitol," stated the alert. "This flight will be monitored by the U.S. Capitol Police Command Center and other federal government agencies."